1. Department of Mechanical and Automation Engineering; I-Shou University; Kaohsiung County 840; Taiwan
2. Department of Mechanical Engineering; Taoyuan Innovation Institute of Technology; Jhongli City, Taoyuan County 320; Taiwan
3. Department of Mechanical Engineering; Kun Shan University; Tainan 710; Taiwan
4. Department of Materials Science and Engineering, Institute of Nanotechnology and Microsystems Engineering; National Cheng Kung University; No.1 University Road, Tainan 701; Taiwan